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Sulfur as a catalyst promoter or selectivity modifier in heterogeneous catalysis

机译:硫作为催化剂启动子或异质催化中的选择性修饰剂

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摘要

For most heterogeneous catalysts adsorbed sulfur and sulphur-containing molecules are generally regarded as a poison. However, a growing number of reports from academia and industry demonstrate that sulfur may act as an activity promoter or selectivity modifier in heterogeneous catalysis. Reports from a variety of areas such as Fischer-Tropsch synthesis, catalytic reforming, regio and chemoselective hydrogenation as well as CO oxidation, hydrocarbon oxidation and NO_x reduction are discussed. Based on the literature cited, comments on the levels of sulfur necessary to observe a promotional effect are suggested/proposed, as well as some of the techniques which can be applied to understand such effects.
机译:对于大多数异质性催化剂而言,吸附的硫和含硫的分子通常被视为毒药。 但是,越来越多的学术界和行业报告表明,硫可能在异质催化中充当活动促进者或选择性修饰符。 讨论了来自多种领域的报告,例如Fischer-Tropsch合成,催化重构,Regio和化学选择性氢化以及CO氧化,烃氧化和NO_X还原。 根据引用的文献,建议/提出了观察促销效果所需的硫水平的评论,以及一些可以应用于理解此类效果的技术。

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